Merge pull request sandeepmistry#21 from george-hawkins/master

Add new iBeacon class for nRF51 boards.

examples/ibeacon/ibeacon.ino

@@ -0,0 +1,23 @@
+#include <BLEPeripheral.h>
+#include <iBeacon.h>
+
+#if !defined(NRF51) && !defined(__RFduino__)
+#error "This example only works with nRF51 boards"
+#endif
+
+static BLEPeripheral blePeripheral(0, 0, 0);
+
+void setup() {
+  char* uuid = "a196c876-de8c-4c47-ab5a-d7afd5ae7127";
+  uint16_t major = 0;
+  uint16_t minor = 0;
+  int8_t measuredPower = -55;
+
+  iBeacon::setData(blePeripheral, uuid, major, minor, measuredPower);
+
+  blePeripheral.begin();
+}
+
+void loop() {
+  blePeripheral.poll();
+}

iBeacon.cpp

@@ -0,0 +1,33 @@
+#if defined(NRF51) || defined(__RFduino__)
+
+#include <BLEUuid.h>
+
+#include "iBeacon.h"
+
+void iBeacon::setData(BLEPeripheral& peripheral, const char* uuidString, uint16_t major, uint16_t minor, int8_t measuredPower) {
+  unsigned char manufacturerData[MAX_UUID_LENGTH + 9]; // 4 bytes of header and 5 bytes of trailer.
+  BLEUuid uuid(uuidString);
+  int i = 0;
+
+  // 0x004c = Apple, see https://www.bluetooth.org/en-us/specification/assigned-numbers/company-identifiers
+  manufacturerData[i++] = 0x4c; // Apple Company Identifier LE (16 bit)
+  manufacturerData[i++] = 0x00;
+
+  // See "Beacon type" in "Building Applications with IBeacon".
+  manufacturerData[i++] = 0x02;
+  manufacturerData[i++] = uuid.length() + 5;
+
+  for (int j = (uuid.length() - 1); j >= 0; j--) {
+    manufacturerData[i++] = uuid.data()[j];
+  }
+
+  manufacturerData[i++] = major >> 8;
+  manufacturerData[i++] = major;
+  manufacturerData[i++] = minor >> 8;
+  manufacturerData[i++] = minor;
+  manufacturerData[i++] = measuredPower;
+
+  peripheral.setManufacturerData(manufacturerData, i);
+}
+
+#endif

iBeacon.h

@@ -0,0 +1,16 @@
+#ifndef _I_BEACON_H_
+#define _I_BEACON_H_
+
+#if defined(NRF51) || !defined(__RFduino__)
+
+#include "BLEPeripheral.h"
+
+class iBeacon
+{
+  public:
+    static void setData(BLEPeripheral& peripheral, const char* uuidString, uint16_t major, uint16_t minor, int8_t measuredPower);
+};
+
+#endif
+
+#endif